Configuration Examples

The following sections provide various examples of the SNMP Notification Log feature.

Log all notifications

The following example illustrates how to log all notifications sent by a switch, and retain them for as long as possible. However, to reduce memory usage, you might want to limit the number of notifications in all logs to 5000 entries:

configure snmp notification-log global-entry-limit 5000

Disable aging of notification entries.

configure snmp notification-log global-age-out none

Create the default log. Because you want to log all notifications, the default log can be used instead of a named log, because it does not impose any security checks.

configure snmp add notification-log default

Create a filter that accepts all notifications.

configure snmpv3 add filter "all" subtree 1 type included

Attach the filter to the log.

configure snmp notification-log "default" filter-profile-name "all"

View the configuration, status and entries of the default log.

show snmp notification-log "default"

View entry number 1 of the default log in detail.

show snmp notification-log "default" entry 1

Log all notifications using security

The following example illustrates how to log all notifications that are visible to the SNMP user “monitor” when using the security mode ‘USM‘, and the security level ‘privacy‘.

Create the log and associate it with the security credentials of the user “monitor”.

configure snmp add notification-log "monitor-log" user "monitor" sec-model usm sec-level priv

Create a filter including only all traps.

configure snmpv3 add filter "all" subtree 1 type included

Attach the filter to the log.

configure snmp notification-log "monitor-log" filter-profile-name "all"

View the configuration, status and entries of “monitor-log”.

show snmp notification-log "monitor-log"

View entry number 1 of “monitor-log” log in detail.

show snmp notification-log "monitor-log" entry 1

NMS logs all link status change notifications

The following example illustrates the configuration for when an NMS wants to log all link status change notifications. The NMS queries the log every hour, and wants to age out the log entries every two hours. Additionally, to ensure that link status events are not replaced by other events, the NMS wants to reserve 1000 entries for this log.

Create a notification filter profile including both linkUp and linkDown OIDs.

snmpNotifyFilterMask.11."link-status".1.3.6.1.6.3.1.1.5.3 = ''H
snmpNotifyFilterType.11."link-status".1.3.6.1.6.3.1.1.5.3 = include
snmpNotifyFilterStorageType.11."link-status".1.3.6.1.6.3.1.1.5.3 = nonVolatile
snmpNotifyFilterRowStatus.11."link-status".1.3.6.1.6.3.1.1.5.3 = createAndGo
snmpNotifyFilterMask.11."link-status".1.3.6.1.6.3.1.1.5.4 = ''H
snmpNotifyFilterType.11."link-status".1.3.6.1.6.3.1.1.5.4 = include
snmpNotifyFilterStorageType.11."link-status".1.3.6.1.6.3.1.1.5.4 = nonVolatile
snmpNotifyFilterRowStatus.11."link-status".1.3.6.1.6.3.1.1.5.4 = createAndGo

Create a named log for link status notifications, attach the profile created above, and set its entry limit to 1000. The SNMP operation of creating this entry must be performed using security credentials that have access to the linkUp and linkDown notifications.
```
nlmConfigLogFilterName.5."links" = "link-status"
nlmConfigLogEntryLimit.5."links" = 1000
nlmConfigLogAdminStatus.5."links" = enabled
nlmConfigLogStorageType.5."links" = nonVolatile
nlmConfigLogEntryStatus.5."links" = createAndGo
```
Set the global age-out to 120 minutes.
```
nlmConfigGlobalAgeOut.0 = 120
```
To view the log contents, the NMS must query nlmLogTable and nlmLogVariableTable.

Published March 2020prev | next

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